If you were a predator bird, which moth would be easier prey to hunt? Why?

Birds will frequently attack when the moths are at rest against a tree, which is why it is so crucial that the insect blends into its surroundings. It is much easier for birds to locate and prey on moths that do match the bark of the tree it is resting against, making it an easier target than a moth that does match.

it means there are 3 atoms of oxygen